package com.itheima.exception;

import com.itheima.pojo.Result;
import lombok.extern.slf4j.Slf4j;
import org.apache.ibatis.binding.BindingException;
import org.springframework.dao.DuplicateKeyException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;

@Slf4j
@RestControllerAdvice
public class GlobalExceptionHandler {
    @ExceptionHandler
    public Result handleException(Exception e){
        log.error("程序出错了"+e);
        return Result.error("出错了，请联系管理员~");
    }

    @ExceptionHandler
    public Result handleDuplicateKeyException(DuplicateKeyException e){
        log.error("程序出错了"+e);
        String message = e.getMessage();
        int index = message.indexOf("Duplicate entry");
        String substring = message.substring(index);
        String[] strings = substring.split(" ");
        return Result.error(strings[2]+"已存在");
    }

    @ExceptionHandler
    public Result handleHasStudentException(HasStudentException e){
        log.error("程序出错了"+e);
        return Result.error("对不起，该班级下有学生，不能直接删除");
    }
}
